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For virtual memory in the kernel physical memory mapping area, virt_to_phys() can be used to convert kernel virtual addresses into physical addresses, and phys_to_virt() can be used to convert physic...[Details]
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1. In the previous article, we said that we have created a forlinx folder in the root directory of ubuntu12 in the virtual machine. Now copy arm-linux-gcc.4.3.2.tgz to forlinx. I use the xftp that I c...[Details]
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On August 8, Jinlong Electromechanical announced that Guangdong Jinxingchuang Precision Technology Co., Ltd. ("Jinxingchuang"), a wholly-owned subsidiary of the company, plans to jointly invest with ...[Details]
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In recent years, network technology has developed rapidly, especially the rapid development of peer-to-peer networks, which has become one of the focuses of the industry. Related applications based on...[Details]
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Every four clock cycles of the PIC microcontroller is an internal instruction cycle.
For example: for an 8MHz crystal oscillator, the internal instruction cycle is 1/(8/4) = 0.5 uS
Example 1: 35u...[Details]
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1. Overview of this article
As a heavy raw material in industrial production, dilute nitric acid is used in many chemical productions. The production process of dilute nitric acid also has ...[Details]
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0 Introduction
Semiconductor lasers are the most important type of lasers in practical applications. Semiconductor lasers have the advantages of high conversion efficiency, small size, light we...[Details]
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The video display screens in the conference hall of the Jinan Municipal Government in Shandong Province, China use Multi CHIPLED LEDs from OSRAM Opto Semiconductors. These LEDs were selected due to...[Details]
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0 Introduction
The engine is a comprehensive system. It is the main assembly of the car and the source of power for driving. Due to its complex structure and many parts, each part is affected b...[Details]
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The serial port is a very commonly used debugging tool, and we must all be proficient in using its various functions. 1. Question requirements and solutions What we need to do is that the compute...[Details]
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In today's electronic devices, measuring standby power or current leakage is a common task during design verification and debugging. As consumers demand products with longer battery life and more ene...[Details]
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Gangue is a solid waste discharged during coal mining and coal washing. It is a black-gray rock associated with coal seams during the coal formation process. There are more than 1,500 gangue mounta...[Details]
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South Korea's exports of organic light-emitting diode (OLED) TV panels to Japan more than doubled in June to a record high, according to South Korean media reports, with industry experts speculating ...[Details]
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For electronic engineers, PIC microcontroller is a very important product. PIC microcontroller is an integrated circuit used to control peripheral devices, a CPU with decentralized (multi-tasking) fu...[Details]
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Recently, Wuhan Municipal Bureau of Economics and Information Technology announced the results of the 2024 unicorn enterprise certification. 44 enterprises in the city were selected, of which 31 were ...[Details]